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Creep life prediction for udimet 720 material using the initial strain method (ISM)

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Abstract

Despite of considerable research results of uniaxial tension creep available for superalloys, few studies have been made on high temperature creep using the Initial Strain Method (ISM). In this paper, the real-time prediction of high temperature creep strength and creep life for the nickel-based superalloy Udimet 720 (high-temperature and high-pressure gas turbine engine materials) was performed on round-bar type specimens under pure static load at the temperatures of 538°C, 649°C, and 704°C. The predictive equation derived from the ISM in creep tests showed better reliability than those from LMP(Larson-Miller Parameter) and LMPISM (Larson Miller Parameter-Initial Strain Method) specially for long time creep prediction (103-105h)

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Authors and Affiliations

  1. Dongeui University, Research Institute for Industrial Technology Development, 24, Gavadong, Busanjingu, 614-714, Busan, Korea

    Yu-Sik Kong

  2. Dongeui University, School of Mechanical Engineering, 24, Gayadong, Busanjingu, 614-714, Busan, Korea

    Han-Ki Yoon

  3. Pukyong National University, School of Mechanical Engineering, San 100, Yongdangdong, Namgu, 608-739, Busan, Korea

    Sae-Kyoo Oh

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  1. Yu-Sik Kong
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  2. Han-Ki Yoon
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  3. Sae-Kyoo Oh
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Correspondence to Yu-Sik Kong.

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Kong, YS., Yoon, HK. & Oh, SK. Creep life prediction for udimet 720 material using the initial strain method (ISM). KSME International Journal 17, 469–476 (2003). https://doi.org/10.1007/BF02984447

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